156B Week 7

Overview of Status of Analysis, Design, Fabrication, Tests, etc.

• • Fabrication and Testing

Accomplishments from Previous Week

• • • • • Flow meter/pressure transducer 

          • Create OP-Amp circuit (Cameron)

          • Integrate new circuit with Arduino (Cameron)

        • Sewing

          • Neoprene seal (Scott) 

          • Sew everything (Scott)

          • Material stress test with sewn fabric samples (Heja)

          • Report Revisions

            • Writing corrections on report (Tim)

            • Adding information to chapters 2,4 and 5 (Tim)

Goals for Next Week (list names after each item). Use specific and measurable objectives.

• • Pressure Transducer

  • Calibrate and update code (Cameron)

  • Create connector (Cameron)

  • LBNP

  • Finish sewing (Scott)

  • Material Testing for Fabric (Heja)

  • 3 New Poles (Tim)

  • Test prototype vacuum ports (Cameron)

  • 1" cam buckles (Cameron)

  • 2" cam buckles and ratcheting (Cameron)

  • Lasercam 2 center supports (Heja)

  • Order new D-Rings (Scott)

  • Report

  • New photo of old LBNP designs (Cameron)

  • Reproduction drawings: Arches (Heja)

  • Reproduction drawings: Poles (Tim)

  • SAE Standard for hose fitting (Cameron)

  • New decision table and write up for harness/foam block/bike seat (Tim, Friday 9AM)

    • Decision chart for arches and half moons (Tim)

  • Type Equations (Heja)

• New Figures

  • Photos of old designs P6 (Heja)

  • New design solution w/o mattress P10 (Cameron)

  • Change figure to polycarbonate P16 (Cameron)

  • Annotated figure of fabric shell P17 (Cameron)

  • FBD and FEA figures:

    • End Piece (Heja FBD, Cameron FEA)

    • Rods (Heja FBD, Cameron FEA)

  • Preliminary Design Review Presentation

    • Outline

    • CAD

    • How design meets objectives

    • Plan for completing design

    • High Priority Goals

    • Low Priority Goals

    • Plan for testing

    • Remaining Concerns

Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)

• • Gave updates on current progress via email and they like the current progress. 

  • Had to postpone future meeting until Thursday (5/18) and will be sharing a near complete design and discuss testing. 

Instructor Comments from Last Meeting and Actions Taken to Address these Comments  (indicate date of comments and if via email or in person)

• • Reviewed report 

    • Have worked on revising the report. 

  • Discussed current calculations and SolidWorks simulations 

    • Updated some calculations with better boundary conditions

Comments from Other Students in the Class (indicate date of comments and if via email or in person)

• • N/A

Risks and Areas of Concern

• • Vacuum port connection

Resources or Information Required but not Available

Schedule

• • Present progress of frame to sponsors (5/18)

  • Begin Testing (5/22)

Budget (list amount spent and amount remaining)

Progress on Report and Webpage

• • Revisions made to text of report.

  • Sections of requirements were simplified to list form

  • Annotated CAD updated

  • New annotated CAD files being updated